Update docs for when.iterate and unfold. Clean up formatting and "see also"s
Update docs for when.iterate and unfold. Clean up formatting and "see also"s

mlennon3/when,anthonyvia/when,ning-github/when,frank-weindel/when,stevage/when,DJDNS/when.js,SourcePointUSA/when,ning-github/when,mlennon3/when,frank-weindel/when,caporta/when,SourcePointUSA/when,anthonyvia/when,caporta/when,tkirda/when,petkaantonov/when,stevage/when,tkirda/when